/*
After purchasing a humble book bundle, go to your download page for that bundle.
Open a console window for the page and paste in the below javascript
*/

function windowsNormalize(path) {
  return path.replace( /[<>:"\/\\|?*]/g, '_' );
}

function getTitle() {
  var re = /^Humble\ Book\ Bundle\:\ (.*)\ \(/g;
  return re.exec(document.title)[1];
}

function showHashes() {
  document.querySelectorAll('.dlmd5').forEach(md5 => {
    if (md5.innerText.trim() == 'md5') {
      md5.click();
    }
  });
}

function gatherInfo() {
  const data = [];
  const bundleTitle = getTitle();
  showHashes();
  document.querySelectorAll('.row').forEach(row => {
    const bookTitle = row.dataset.humanName;
    [...row.querySelectorAll('.downloads .download')].forEach(dl => {
      const downloadLink = dl.querySelector('.flexbtn a').href;
      const filename = /\.com\/([^?]+)/.exec(downloadLink)[1];
      data.push({
        "bundleTitle": bundleTitle,
        "bookTitle": bookTitle,
        "filename": filename,
        "downloadLink": downloadLink,
      });
    });
  });
  return data;
}

function downloadBookBundle() {
  const commands = []
  const md5Sums = [];
  const info = gatherInfo();
  for (var i in info) {
    bundleTitle = info[i]["bundleTitle"];
    bookTitle = info[i]["bookTitle"];
    filename = info[i]["filename"];
    downloadLink = info[i]["downloadLink"];
    commands.push(`curl --create-dirs -o "${windowsNormalize(bundleTitle)}/${windowsNormalize(bookTitle)}/${windowsNormalize(filename)}" "${downloadLink}"`);
  };
  console.log(commands.join(' && '));
}

downloadBookBundle();